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Rotating speed control method for electric compressor of automobile air conditioner

An electric compressor and speed control technology, which is applied in pump control, machine/engine, mechanical equipment, etc., can solve the problems of slow cooling speed, large overall temperature change, and loud noise, so as to increase service life, reduce energy consumption, Noise reduction effect

Active Publication Date: 2017-02-01
DONGFENG LIUZHOU MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a method for controlling the speed of an electric compressor of an automobile air conditioner, so as to solve the problems of slow cooling speed or large noise and large overall temperature changes when the automobile air conditioner is refrigerated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Embodiments of the present invention are described in further detail below:

[0036] The automobile air-conditioning electric compressor speed control method is suitable for A-class pure electric cars. The displacement of the electric compressor is 33cc / rev, the speed range of the compressor is 800 rpm-8500rpm, and the cooling power of the air-conditioning assembly is 450W.

[0037] The whole test includes the following steps: periodically collect the real-time value Te of the evaporator temperature and the real-time value N of the rotational speed of the compressor, and judge the temperature range of the difference ΔT1 between the real-time value Te of the evaporator temperature and the set value Ts of the evaporator temperature:

[0038] If △T1≥5℃, then control the speed value Ns of the compressor according to the set rapid cooling model;

[0039] If △T1<5°C, control the speed value Ns of the compressor according to the set heat preservation model; the acquisition per...

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Abstract

The invention discloses a rotating speed control method for an electric compressor of an automobile air conditioner. The rotating speed control method comprises the following steps that the real-time value Te of the temperature of an evaporator and the real-time value N of the rotating speed of the compressor are acquired periodically, and the temperature range of the difference value delta T1 of the real-time value Te of the temperature of the evaporator and the set value Ts of the temperature of the evaporator is judged; if the delta T1 is larger than or equal to 5 DEG C, the rotating speed value Ns of the compressor is controlled according to a set quick cooling model; if the delta T1 is smaller than 5 DEG C, the rotating speed value Ns of the compressor is controlled according to a set thermal insulation model; and the acquisition cycle is 15 seconds. Compared with the prior art, by means of the rotating speed control method, the problems that the cooling speed is low or the noise is large in the refrigeration process of the automobile air conditioner, and the overall temperature change is large are solved.

Description

technical field [0001] The invention relates to the technical field of automobile air-conditioning control, in particular to a method for controlling the rotational speed of an automobile air-conditioning compressor. Background technique [0002] The existing method for controlling the rotational speed of the electric compressor of the automobile air conditioner is generally to set the compressor to work at a fixed rotational speed, stop the compressor when the temperature in the automobile reaches the lower limit for cooling, and start the compressor when the temperature is too high. This control method makes the temperature in the car drop slowly. If the fixed speed is set too high, it will generate a lot of noise, which not only affects the service life of the compressor, but also affects the comfort in the car; Starting the compressor will also cause large fluctuations in the overall temperature in the car, which will affect the comfort of the ride and consume a lot of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06
CPCF04B49/06
Inventor 周俊刘晓宇姚帅胡明贵
Owner DONGFENG LIUZHOU MOTOR
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